XDA: HTP Performance Super Stock Added to 2020 Drag Racing Season
HTP Performance Super Stock Added to 2020 Drag Racing Season
The HTP Performance Super Stock rulebook is now posted online. Please review the rulebook for this exciting new class to make sure you are legal and ready to race starting in April. Click here to download in PDF.
CLASS DESCRIPTION: Super Stock motorcycles are 4‐stroke naturally aspirated production machines sold for street use.
DESIGNATION: The class designation is SS. All entrants must display this designation on both sides of their motorcycle by their bike number.
FORMAT: This is a 1/4 mile heads‐up class run on a .400 pro tree. The class will qualify a 32‐bike field and place them on a pro ladder.
CHANGING BIKES: A racer can change his or her bike in qualifying if there isstill another qualifying session forthe class, however all previous qualifying
data will be erased, and the racer must re‐qualify the new bike (You still need to notify the tower to change). The bike and rider that runs first round
is the one that must be used for the remainder of eliminations, even if the class is completed on another weekend due to weather.
POINTS: This class will be a points class at all XDA events.
Must remain completely stock. No polishing, no coatings. All internal and external engine parts must remain stock OEM with no modifications, metal
removal, or blueprinting.
2: FUEL INJECTION
Aftermarket fuel injection management systems that allow fuel or ignition timing adjustments must plug in‐line with the OEM, unmodified wiring
harness and work in conjunction with the Factory ECU e.g. Bazzaz, Power Commander, Rapid bike. Factory ECU can be reflashed for tuning and
derestricting. No stand‐alone, plug‐n‐play, or kit ECU’s are allowed. All units must be available for immediate shipment from U.S. warehouses to any
of the manufacturers’ U.S. retail outlets for sale to the public. Availability must be maintained throughout the current racing season. Quick shifters
that cut ignition and/or fuel are permitted.
The OEM airbox must be utilized. Air filter use is mandatory. Only commercially manufactured air filters permitted. External airbox supply ducts must
be stock and may not be removed. Exhaust emission control valves and hoses may be removed and all airbox drains must be plugged. No routing of
exhaust emission system to crank cases allowed. Velocity stacks can be rearranged utilizing stock OEM stacks of same model.
Clutch plates and springs may be replaced with aftermarket parts. Clutches may be backdated or modified to eliminate factory slipper clutch. Clutch
cushion kits allowed.
Brake pads and brake lines may be replaced with DOT‐approved components. Brake disc may not be drilled. Rotors and Calipers must remain factory.
6: FRONT SUSPENSION
The use of a tie‐down strap will be permissible, but once in place the excess strap must be secured to prevent any adjustment as to be determined
by the Tech Director. Standard production internal parts of forks may be modified to alter dampening. Aftermarket damper kits or valves may be
installed. Fork springs may be replaced with optional or aftermarket springs. Fork caps may be modified or replaced to allow external adjustment of
fork springs only. A steering damper is required. The stock steering damper may be replaced with an aftermarket damper. Minimum required
suspension travel is 1‐inch. Maximum fork tube exposure above the upper triple clamp or clip‐on’s is 2 1/2‐inch. Front fender may be lowered for
7: REAR SUSPENSION
Rear suspension must have a minimum of 1‐inch travel. Rear suspension changes allow the use of an aftermarket dog bone with stock knuckle arm.
Factory Shock can be re‐valved only. No aftermarket shocks permitted.
Stock frames required with no modifications. Stock wheelbase. Frame must display vehicle identification number. Frames may be polished. Steering
head angle may not be altered.
9: GROUND CLEARANCE
All Ground Clearance are to be measured with the amount of air present in the rear tire at the conclusion of the run with rider sitting on the bike,
straight up, perpendicular to the ground. No rider or team member is allowed to alter or measure the pressure or make any contact with either tire
valve stem until the conclusion of the post‐run tech inspection. The determined clearance will be measured to the most solid stop. No aftermarket
oil drain plugs permitted.
1000CC: All riders must maintain a minimum of 2‐inch ground clearance.
Big Bore: Riders less than 150 lbs. must maintain a minimum of 3‐inches ground clearance. Riders over 150 lbs. must maintain minimum 2‐inch
ground clearance. All year Suzuki Hayabusas will be allowed 2‐inch ground clearance.
Must retain stock swingarm with no modifications.
11: WHEELS, SPROCKETS, CHAIN
Wheels must remain factory to make and model that were provided by the manufacturer. Polishing is permitted. Wheel bearing and seal
modifications are permissible. Chain must remain OEM pitch. Aftermarket sprockets, Non‐O‐ring chains, and O‐ring chains with O‐rings removed are permitted.
Tires permitted for Super Stock competition must meet the following criteria:
1. 120/60‐17 minimum tire size. Applicable DOT standards for motorcycle street use.
2. Properly marked with molded‐in DOT number and construction/compound identification
3. Available for immediate shipment from U.S. warehouse to any of the manufacturer’s U.S. retail outlets for sale to the public. Availability must be
maintained throughout the current racing season.
4. Tire sizes can decrease, but may not be increased from original equipment
VP MR12 Spec Fuel: This class uses a spec fuel of gasoline only. No nitro, no alcohol. All bikes must have a method to provide a fuel sample from the
1. All fairings must be original stock parts with factory paint.
2. All fairing brackets must be original stock parts.
3. Factory seat may be cut and reupholstered.
4. Aftermarket windscreens permissible.
The use of the following electrical aftermarket items is prohibited: Air shifters, stutters, two‐steps, datalogger and O2 sensor. Factory‐original, OEM
shift lights are permitted. Shift lights may not be aftermarket products or retrofitted.
Exhausts must be conventional, under‐pan, up‐sweep pipes. No sidewinders allowed. All aftermarket street pipes must be in stock and readily
available for purchase. No one‐off exhaust pipes are allowed.
All Bike weights will not exceed the factory wet weight.
Super Stock does not permit the removal of any items not specifically listed within these rules. If it is not noted that it CAN be removed, it CANNOT
Additional modifications listed in this section are permitted. Absolutely no other changes from showroom stock will be permitted unless specifically
addressed within these rules.
The following additional items may be removed:
1. Side marker lights, reflectors and mirrors. Disconnection must be made at stock connectors, not by cutting. Wiring harness must remain otherwise
intact. Stock headlight required.
2. License plate bracket
3. Passenger footrest, mounting brackets, and grab rails.
4. Center and/or side stands
SUPER STOCK CLASS WILL HAVE A ZERO-TOLERANCE POLICY WITH MANDATORY PENALTY. IN THE EVENT THAT A MOTORCYCLE IS FOUND WITH ENGINE MODS, WEIGHT BALLAST, OR FUEL TAMPERING, THE RIDER WILL BE IMMEDIATELY DISQUALIFIED FROM THAT EVENT AND BANNED FROM THE CLASS INDEFINITELY
GENERAL SAFETY: All riders must have full leathers (zipped together leathers are recommended and may be mandatory in future). All riders must
have a SNELL 05 or higher full‐face helmet with shield, leathers gloves, and shoes above the ankle. All motorcycles and riders must pass IHRA safety
inspection. Ballistic blankets are recommended but are not required. Tether kill switches required on all entrants. Kill switch, when activated, must
disable ignition, fuel pump(s) and nitrous system solenoids.
2020 XDA Schedule
- PFR Spring Nationals / April 24-26 / MDIR
- MTC Summer Nationals / May 15-17 / VMP
- Superbike Showdown / June 19-21 / MDIR
- WPGC Bike Fest / July 24-26 / MDIR
- Bike Bash / August 21-23 / VMP
- DME Racing Fall Nationals / September 18-20 / MDIR
About the XDA – The Xtreme Dragbike Association (XDA) is an east coast motorcycle drag racing series with 700+ motorcycle racers competing at each event. Every XDA event hosts professional classes, sportsman classes, grudge racing, and a vendor midway. Lifestyle activities such as bike shows, bikini contests, DJ and live bands are also held at select events. For more information on the XDA, please visit XDAracing.com or connect with us on Facebook, Instagram, Twitter and YouTube.